package com.zdp.netty.chapter11;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpServerCodec;
import io.netty.handler.stream.ChunkedWriteHandler;
import lombok.SneakyThrows;

/**
 * @Author zhengdp
 * @Description
 */
public class WebSocketServer {
    public void run(int port) throws Exception{
        EventLoopGroup boos = new NioEventLoopGroup();
        EventLoopGroup work = new NioEventLoopGroup();
        try {
            ServerBootstrap b = new ServerBootstrap();
            b.group(boos,work)
                    .channel(NioServerSocketChannel.class)
                    .childHandler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        protected void initChannel(SocketChannel ch) throws Exception {
                            ChannelPipeline pipeline = ch.pipeline();
                            pipeline.addLast("http-codec",new HttpServerCodec());
                            pipeline.addLast("aggregator",new HttpObjectAggregator(65536));
                            pipeline.addLast("http-chunked",new ChunkedWriteHandler());
                            pipeline.addLast("handler", new WebSocketServerHandler());
                        }
                    });
            Channel channel = b.bind(port).sync().channel();
            System.out.println("Web Socket server Started at port " + port + ".");
            System.out.println("Open your browser and navigate to http://localhost:" + port + "/");
            channel.closeFuture().sync();
        } finally {
            boos.shutdownGracefully();
            work.shutdownGracefully();
        }

    }

    @SneakyThrows
    public static void main(String[] args) {
        new WebSocketServer().run(8080);;
    }
}
